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Re: Mobile T.rex
Through a series of cranks, conrods, cams, and slides that operate the
pushrods, all driven by a single motor. It is just as cool watching those
work as it is watching the skeleton. One of the neatest things is watching
the spring loaded push-pull rods that operate the individual phalanges of the
toes as the foot lifts off and returns to the ground. Hall is a truly
remarkable guy and a mechanical genius (he operates at that level in several
The early version of the rex operated by means of a sophisticated hand crank
(a pair of vice-grip pliers).
Eric Allen wrote:
> Pretty cool, I'd like to see it in action. I'm not a
> mechanical engineer, so I've got a question: How does
> the motor beneath the table connect to the legs? The
> only connection between the table and the skeleton and
> table I see are what look like support rods.
> --- Ralph Miller <email@example.com> wrote:
> > See a few photos of Hall Train's miniature _T. rex_
> > skeleton controlled by rods so as to demonstrate
> > tyrannosaur locomotion. For the American Museum of
> > Natural History's upcoming traveling exhibit,
> > "Dinosaurs: Ancient Lives; New Discoveries," which
> > opens in May.